A motion-compensated video encoding scheme employs progressive fine-granularity layered coding to encode macroblocks of video data into frames having multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. The authentication unit authenticates an ID information outputted from a mobile device carried by a user. Furthermore, the apparatus provides a sufficient level of accuracy to enable the user to watch various phenomena involved in advanced technology, and uses no large quantity of chemicals or the like, which means little load on the environment. A floating prevention unit selects the main word line to a level of a threshold voltage using a driving signal having the level of the threshold voltage, thus preventing sub-word lines of a sub-word line driver, where the sub-word line driving voltage FX is off, from floating. Methods for reducing, partially preventing or completely preventing loss of pulmonary vasodilatory responsiveness to NO inhalation in a mammal are also disclosed. A mechanical seal includes a sealing member and a mount that forms part of a mounting assembly to mount the sealing member to a support structure of the seal.